ANGAN 2019, New Delhi, 9 September 2019 THIS PRESENTATION WAS SHARED - - PowerPoint PPT Presentation

ANGAN 2019, New Delhi, 9 September 2019

ANGAN 2019, New Delhi, 9 September 2019

• Mr. Saurabh Diddi

Director, Bureau of Energy Efficiency, New Delhi

THIS PRESENTATION WAS SHARED BY FOR THE SESSION: “Policy Framework for Energy Efficiency in Buildings (Codes and Standards)” DURING ANGAN 2019

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Energy Efficiency in Buildings

New Delhi

Bureau of Energy Efficiency, Ministry of Power, Government of India

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• Established in 2002 under EC ACT - 2001
• To discharge regulatory function on energy efficiency
• Provides the legal framework for promoting energy conservation

activities:

– Standards and Labelling for appliances & equipment – Energy Consumption norms for energy intensive industries – Demand Side Management (DSM) programme – Energy Conservation Building Code (ECBC) for commercial buildings. – Certification of Energy Auditors and Managers

• Mission Directorate for National Mission for Enhanced Energy

Efficiency (NMEEE)

• Supported by States Designated Agencies at State level

Introduction

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Government of India Initiatives for Buildings

• Residential Buildings

– Eco-Niwas Samhita 2018 – Energy Efficiency Labelling program

• Commercial Buildings

– Energy Conservation Buildings Codes for New Buildings – Super ECBC in States – PAT scheme for buildings – Labeling of Existing Buildings – Energy Efficiency Retrofits in Existing Buildings – Energy Efficient Components (Appliances & Materials) – Net Zero energy buildings

Bureau of Energy Efficiency, Ministry of Power, Government of India

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India’s Electricity Scenario 33 %

Residential & Commercial Buildings Electricity Consumption in 2016-17=1066 BU

0% 10% 20% 30% 40% 50% 60%

Commercial Residential

Electricity Consumption Pattern

Source: Energy Statistics 2018

40% 18% 24% 9% 2% 7% Industry Agriculture Residential Commercial Railways & Traction Other 0% 20% 40% 60%

TOTAL ELECTRICITY CONSUMPTION (BU) IN 2016-17

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Energy Efficiency in Residential Buildings

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Background

• Residential buildings, today, account for nearly 24% of the

total energy consumed.

• Residential electricity consumption has shown rapid

increase.

• With increased built-up area and increasing affordability
• f air-conditioning, residential buildings to become the

largest consumer of electricity.

• The residential buildings expected to increase 2 times in

terms of floor area by 2030 in India.

• 12 million new affordable homes in urban areas under

PMAY (Pradhan Mantri Awas Yojana) by 2022.

Bureau of Energy Efficiency, Ministry of Power, Government of India

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[VALUE] mn sqm [VALUE] mn sqm

1000 2000 3000 4000 5000 6000 7000

Residential Area (mn sqm) Year

Residential Electricity Consumption Vs Area

CAGR (Residential Area) = 6% CAGR (GDP Per Capita) = 8% Residential Area (mn sqm)

111 BU 698 BU

CAGR (Electricity Consumption) = 8%

Residential Electricity Consumption in BU

Residential Electricity Consumption(Actual) (BU) Residential Electricity Consumption (Projected) (BU)

Building Sector- Built up area and electricity consumption projection

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Bureau of Energy Efficiency, Ministry of Power, Government of India

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Eco-Niwas Samhita 2018

The code sets minimum performance standards for building envelope to limit heat gains (for cooling dominated climates) and limit heat loss (for heating dominated climates) through it.

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Focus Area

• Eco-Niwas Samhita 2018 aims to improve thermal comfort and reduce

energy use in residential buildings.

• The part-I primarily focuses on Building envelope (roof, walls, windows

and outside openings)

• Also, it sets minimum building envelope performance standards to

– Limit heat gains (for cooling dominated climates) and to limit heat loss (for heating dominated climates) – Ensuring adequate natural ventilation potential – Ensuring adequate daylighting potential.

• Residential buildings built on plot area ≥ 500 m2 (States and Municipal

Corporations can lower this limit) – Individual houses – Multi-family housing – Flats – Group Housing

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Scope

• The code applies to (a) ‘Residential buildings’ built on a plot area ≥500 m2 and (b)

Residential part of ‘Mixed land-use building projects’, built on a plot area of ≥500 m2.

• Part I – Building Envelope of ECBC-R focusses on only building design and envelope

and electromechanical system is not considered in Part I. The code gives the following provisions to this effect:

• Building Envelope (except roof)

For Four climates

• Maximum value of residential envelope transmittance

value (RETV) for building envelope (except roof) applicable for four climate zones namely, Composite Climate, Hot-Dry Climate, Warm-Humid Climate, and Temperate Climate. For Cold Climate

• Maximum value of thermal transmittance of building

envelope (except roof) for Cold Climate zone (U envelope, cold).

• Building Envelope-Roof

Roof: Maximum value of thermal transmittance of roof (U roof) for all climate zones.

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Scope

Openable window- to-floor area ratio (WFRop).

• The code sets minimum building envelope performance

standard for adequate natural ventilation potential by specifying minimum openable window-to-floor area ratio (WFRop). Visible light transmittance (VLT)

• The code sets minimum building envelope performance

standard for adequate daylight potential by specifying minimum visible light transmittance (VLT) for the non-

• paque building envelope components.

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Expected Outcomes

• Approx. 20% saving in cooling energy as compared to conventional building

design

• Minimum 125 BU of saving in electricity for period 2018-2030
• Minimum 100 MT of CO2 equivalent abatement for period 2018-2030

1.04 5.19 13.69 21.51

2018 2022 2027 2030 Billion Units per Year

Energy Saving

60 49

Baseline (RETV: 19 W/m2) Code compliant (RETV: 15 W/m2) Cooling Energy (kWh/m2.y) 20% reduction

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Expected Outcomes

Daylight Natural Ventilation Monetary Savings EE Homes Thermal Comfort

Proper design and shading of windows to reduce heat gains, adequate window size for natural ventilation and light weight and good thermal insulation (AAC blocks etc) to reduce heat gains, thus leading to Energy Efficient Homes.

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Energy Efficiency Label for Residential Buildings

• Recently

launched

• n

February 26, 2019 by Hon’ble Minister of Power and New & Renewable Energy.

• Objectives:
• To provide information to

consumers for EE Homes

• Energy Sustainability for India
• To facilitate in meeting the

Indian NDC Targets

• Market

Transformation for Energy Efficiency in each Home

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Indicator for the proposed labelling program

• Indicator : Energy Performance Index (EPI)
• EPI

= Annual Energy consumption (kWh/yr)/built up area(m2)

• EPI Calculation = EPI for AC spaces at 24 degrees set-point (E1) + EPI

for other spaces at IMAC NV set-points (E2) and EPI for other appliances (E3) (constant value)

*E1 and E2 includes following systems

• Building envelope characteristic
• Lighting system
• Comfort system (AC)

*E3 includes appliances

• Microwave oven
• Grinder
• Refrigerators
• TV
• Water Pump
• Washing Machine

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Star rating benchmarking

Residential Building Star Rating Plan Period: 14 December 2018 to 31 December 2024 Star Rating Energy Performance Index (E1 + E2) of Dwelling Unit Composite Warm & Humid Hot and Dry Temperate 1-star 52 < EPI ≤ 60 58 < EPI ≤ 64 55 < EPI ≤ 67 28 < EPI ≤ 31 2-star 45 < EPI ≤ 52 49 < EPI ≤ 58 47 < EPI ≤ 55 24 < EPI ≤ 28 3-star 37 < EPI ≤ 45 39 < EPI ≤ 49 38 < EPI ≤ 47 21 < EPI ≤ 24 4-star 29 < EPI ≤ 37 30 < EPI ≤ 39 29 < EPI ≤ 38 17 < EPI ≤ 21 5-star EPI ≤ 29 EPI ≤ 30 EPI ≤ 29 EPI ≤ 17

• For Composite, Warm and Humid, and Hot and Dry: 25% area operated at 24°C and

75% area operated at IMAC-NV set-point temperature

• For Temperate: 100% area operated at IMAC-NV set-point temperature
• E1 and E2 includes following systems: Building envelope characteristic; Lighting

system; and Comfort system (AC)

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Key stages of proposed labelling scheme

Construction permit is issued “Applied For“ labelling

Final Asset Label

Existing building Not mandatory in case the builder is availing the label at occupancy certificate stage Occupancy Certificate Obtained

New Dwelling Existing Dwelling with certain assumptions for Operation Final Asset Label

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Proposed institutional structure

BEE may appoint an Independent Agency (third party) with to support the overall implementation of Residential Building labelling program Independent Agency (technical team)

Communication with BEE and its appointed

• rganization for

entire process AND handholding the applicants Creation of a helpdesk for responding queries Sample of filled applications (illustrative) to be provided Answers to FAQ’s to be provided Brief guideline on key steps

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Mechanism required for exchange of information

• Creation of an Online Portal and Database for respective

information

XYZ To initiate the labelling process owner/developer/certified professional shall create a username and password on the

• nline portal

SUBMIT

XYZ USERNAME PASSWORD

• The Independent third party agency shall have the access for specific

stages of Online Portal. The whole process shall be controlled by BEE through Digital Signatures

For both:

• New Buildings
• Existing

Buildings

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Outline of process for awarding BEE Star Label

Preparation stage

Pre-requisites for applying to BEE Evaluation for eligibility requirements

Application processing

Application submission Scrutiny of received application Approval for label

Implementation stage

Label renewal Label transfer Changes in label awarded already Uptake strategies

Monitoring & Verification

Verification audits Data reporting for monitoring the progress

BEE Star Label for Residential Building:

• Applied For Label (specifically for developers or under construction

residential buildings – Will be always Voluntary)

• Final Asset Label

Outline of process for awarding BEE Star Label

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Label and Passport

Building Passport containing details of the respective house /residential building Label in a form of Plaque to be placed as a Name Plate

The energy saving potential through proposed labelling program is around 388 BU by the year 2030.

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Energy Efficiency in Commercial Buildings

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Energy Conservation Building Code 2017

• Applicable to New Commercial buildings (Inclusive Govt.

Buildings) having connected load of 100 kW or greater or a contract demand of 120 kVA or greater.

• Currently is under voluntary stage
• Mandatory notification in progress in different States
• While the ECBC has been developed by BEE, its

enforcement lies with the State governments and urban local bodies through notification within their states as per their regional requirements

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Features of ECBC 2017

• Technology Neutral
• Renewable Energy Integration
• Incremental energy performance levels
• Applicability to various categories of buildings and

Passive Design Strategies.

• Additional improvements in higher grades

 ECBC plus: 35% or higher  Super ECBC: 50% or higher

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Impact

201 213 224 196 217 50 100 150 200 250 Cold Composite Hot Dry Moderate Warm Humid Energy Performance Index (kWh/m2-yr) Typical Building ECBC ECBC+ SuperECBC 21% 27% 45% 22% 32% 46% 21% 33% 44% 20% 32% 46% 25% 35% 47%

Bureau of Energy Efficiency, Ministry of Power, Government of India

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Compliance Mechanism

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THANK YOU